What types of performance testing have you conducted? How long did you hold the load? Where were the results stored?

In my practice, the following types of performance testing were used:

• Load Testing — testing the system under expected maximum load.
• Stress Testing — testing the system's behavior under loads exceeding normal levels.
• Soak Testing — prolonged load testing to identify issues with memory leaks or degradation.

The duration of load retention depended on the test objectives: for stress tests — from a few minutes to an hour, for soak tests — from several hours to a day.

Results were usually saved in report formats in monitoring systems (e.g., Grafana, Kibana) and as CSV/JSON files for further analysis. Specialized tools such as JMeter, Gatling were also used, where results were saved in their own formats and exported for reporting.